Mothers will be identified based on obtaining a score of ≥12 on the Edinburgh Perinatal Depression Screen administered by home visitors at 3 months postpartum. Final eligibility will be determined based on subsequently obtaining a diagnosis of Major Depressive Disorder (MDD) using the SCID. A comprehensive assessment of depression, other psychiatric symptoms, social support and network, and parenting and child adjustment will be administered at pre-treatment, post-treatment, and 3 month follow-up. Ratings of MDD at post-treatment and follow-up will be conducted by clinicians blind to condition.